ABSTRACT The aim of this study was to evaluate the relative expression of two candidate genes, CYP (cyclophilin) and Arabinogalactan, possibly involved with seed quality, in contrasting soybean seed coats. The following genotypes were used: BMX Potência RR and CD 202, both with yellow coats, and TP and IAC, with black coats. The relative expression of the genes was evaluated by qPCR in seven development phases ...
ABSTRACT The attributes that confer seed quality can largely be considered dependent on the coat. The aim of this study was to evaluate the quality and hydration pattern of the seeds of four contrasting soybean genotypes for the coats characteristics; BMX Potência RR and CD 202 with yellow coats and IAC and TP with black coats. The first stage of the study consisted of seed multiplication in the 2012/2013 harve...
ABSTRACT: Evaluation of differential candidate gene expression in contrasting soybean seeds is an auxiliary tool in the partial elucidation of processes involved in seeds formation, as well as it contributes to the generation of new information that can be used in future research or in the development of r genetic superior constitutions. The aim of this study was to evaluate the expression of two candidate gene...
RESUMO Diferentes fatores ambientais podem afetar a seletividade de herbicidas às culturas. O objetivo deste experimento foi avaliar os efeitos da época de semeadura e da redução artificial da luminosidade, em diferentes fases do desenvolvimento das plantas, sobre a seletividade de herbicidas e os componentes de produtividade do arroz irrigado. O experimento foi conduzido a campo, na safra 2012/2013, com o cult...
O fósforo pode contribuir com o aumento de qualidade das sementes produzidas e incrementar a produtividade de grãos. O objetivo deste trabalho foi avaliar o efeito da adubação fosfatada sobre a qualidade, a composição química e a produtividade das sementes de soja e, a produtividade de grãos em lavoura estabelecida partir dessas sementes. Foram realizados dois ensaios. No Ensaio 1 avaliaram-se os seguintes trat...
RESUMOO objetivo neste trabalho foi avaliar a qualidade fisiológica de sementes de arroz em função da aplicação de herbicidas em duas épocas de semeadura e redução artificial de luz em diferentes fases do desenvolvimento da cultura. O experimento a campo, realizado na safra 2012/2013, constou de fatorial 2x3x5, sendo os fatores: época de semeadura (18/10 e 09/11); herbicida [testemunha (capinada), bispiribaque ...
The seed coat is vital for the proper development of soybean seeds and also, after their physiological maturity, for providing protection against various biotic and abiotic factors. The aim of this work was to evaluate the relative expression of three candidate genes, VINV1, SCB1 and SCS1, which are possibly involved in seed quality, in the contrasting seed coats of four soybean genotypes. Two yellow seed coat ...
Glucanases can act in plant defense against biotic factors. Despite its importance, research to study the expression of genes encoding glucanases in soybean seed coats is limited. The aim of this study was to assess the relative expression of the SGlu2 gene (β-1.3-Glucanase 2), possibly involved in defense against biotic factors, in coats of seeds of four soybean genotypes. Two genotypes of black seed coats, IA...
Lipoxygenase enzymes are relevant in several characteristics of soybean seeds, such as germination performance, storage capacity and tolerance to infection by microorganisms. In this sense, the study of allelic variations of the genes related to that enzyme may be promising for the development of molecular markers associated with phenotypic characteristics which are relevant to seed physiology. This study aimed...
Light is an important factor in the cold protection process in plants. The objective of this study was to evaluate the relationship between temperatures and levels of quantity and quality of light on the initial development of rice cultivars and red rice biotypes. Two experiments were conducted, in the laboratory and in the greenhouse, from July to November 2012. The factors studied in experiment I were: temper...